#menu {
	width: 20%;
}

#menu>nav, #menu>nav>table, #menu_content>ul {
	height: 100%;
}

#menu_header {
	height: 15%;
	text-align: center;
}

#menu_content {
	height: 100%;
}

#menu_content>ul {
	padding: 0px;
	margin: 0px;
}

.menu_item {
	height: 12%;
	padding-left: 20%;
	list-style-type: none;
}

.menu_item>a {
	position: relative;
	top: 25%;
	text-decoration: none;
	color: rgb(0, 0, 0);
	font-size: 18px;
}

.menu_item:hover {
	background-color: rgb(0, 160, 255);
	cursor: pointer;
}